# Sound and Hearing Physics > Physical principles of sound waves, hearing mechanics, and auditory processing as tested in MCAT physics and biology sections - **Canonical URL:** https://flashcards.world/flashcards/sets/9b26d023-9df5-4ac2-9e3b-061ad9bd13c6/ - **Markdown URL:** https://flashcards.world/flashcards/sets/9b26d023-9df5-4ac2-9e3b-061ad9bd13c6.md - **Level:** intermediate - **Languages:** en → en - **Total Cards:** 48 ## Flashcards (48 Cards) | # | Front (Term / Prompt) | Back (Definition / Answer) | Example | Multiple-Choice Options | | :--- | :--- | :--- | :--- | :--- | | 1 | How does temperature affect the speed of sound? | The speed of sound increases with an increase in temperature due to faster particle motion. | | | | 2 | What is the principle of superposition? | The principle of superposition states that when two or more waves overlap, the resultant wave is the sum of the individual waves. | | | | 3 | Define wavelength in sound waves. | Wavelength is the distance between successive crests or troughs of a wave, inversely related to frequency. | | | | 4 | What is auditory fatigue? | Auditory fatigue is a temporary reduction in hearing sensitivity following exposure to loud sounds. | | | | 5 | How do hair cells in the cochlea function? | Hair cells in the cochlea convert mechanical vibrations into electrical signals that are sent to the brain. | | | | 6 | Define longitudinal wave. | A longitudinal wave is a wave in which the particle displacement is parallel to the direction of wave propagation. | | | | 7 | What is a sound wave's phase? | Phase refers to the position of a point in time on a waveform, often expressed in degrees. | | | | 8 | What is the significance of the fundamental frequency? | The fundamental frequency is the lowest frequency of a periodic waveform, determining the pitch of the sound. | | | | 9 | What are the two main types of sound waves? | The two main types of sound waves are longitudinal waves and transverse waves. | | | | 10 | What is the phenomenon of sound diffraction? | Sound diffraction is the bending of sound waves around obstacles or through openings. | | | | 11 | What is sound? | Sound is a mechanical wave that propagates through a medium (solid, liquid, or gas) as a result of vibrations. | | | | 12 | What are the three bones of the middle ear called? | The three bones of the middle ear are the malleus (hammer), incus (anvil), and stapes (stirrup). | | | | 13 | What is the Doppler effect? | The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source. | | | | 14 | What is the auditory nerve? | The auditory nerve transmits auditory information from the cochlea to the brain. | | | | 15 | What is resonance in sound? | Resonance is the phenomenon that occurs when an object vibrates at its natural frequency due to an external force. | | | | 16 | What is a sound wave's compression? | Compression is the region in a longitudinal wave where particles are closest together. | | | | 17 | What is the difference between noise and music? | Noise is typically considered to be an unpleasant or unwanted sound, while music is organized sound that is perceived as harmonious. | | | | 18 | What is rarefaction in sound waves? | Rarefaction is the region in a longitudinal wave where particles are spread apart. | | | | 19 | What is the function of the auditory ossicles? | The auditory ossicles amplify and transmit sound vibrations from the eardrum to the inner ear. | | | | 20 | What is the difference between conductive and sensorineural hearing loss? | Conductive hearing loss is due to problems in the outer or middle ear, while sensorineural hearing loss is due to damage to the inner ear or auditory nerve. | | | | 21 | What is the relationship between frequency and pitch? | Higher frequency sound waves correspond to higher pitch, while lower frequency sound waves correspond to lower pitch. | | | | 22 | What is the difference between constructive and destructive interference? | Constructive interference occurs when two waves combine to make a larger amplitude, while destructive interference occurs when they combine to reduce amplitude. | | | | 23 | What is the function of the eardrum? | The eardrum vibrates in response to sound waves, converting them into mechanical vibrations. | | | | 24 | What is the significance of sound intensity? | Sound intensity is a measure of the power per unit area carried by a sound wave, affecting how loud a sound is perceived. | | | | 25 | What is the role of the basilar membrane in hearing? | The basilar membrane vibrates in response to sound waves, helping to stimulate hair cells in the cochlea. | | | | 26 | What is the difference between pitch and loudness? | Pitch is determined by frequency, while loudness is determined by amplitude. | | | | 27 | What is the speed of sound in air at room temperature? | The speed of sound in air at room temperature (20°C) is approximately 343 meters per second. | | | | 28 | What is the role of the vestibular system? | The vestibular system helps maintain balance and spatial orientation, working alongside the auditory system. | | | | 29 | What is frequency in the context of sound? | Frequency is the number of cycles of a sound wave that occur in one second, measured in hertz (Hz). | | | | 30 | What is the role of the pinna? | The pinna is the outer part of the ear that helps to collect and direct sound waves into the ear canal. | | | | 31 | What is the role of the auditory pathway? | The auditory pathway transmits sound information from the ear to the brain for processing and interpretation. | | | | 32 | What is the inverse square law in relation to sound? | The inverse square law states that the intensity of sound decreases with the square of the distance from the source. | | | | 33 | What is the function of the semicircular canals? | The semicircular canals help maintain balance and spatial orientation, not directly involved in hearing. | | | | 34 | What is the role of the outer ear in hearing? | The outer ear collects sound waves and funnels them into the ear canal. | | | | 35 | What is the role of the auditory processing center in the brain? | The auditory processing center interprets and makes sense of the sounds we hear, including language and music. | | | | 36 | What is sound masking? | Sound masking is the process of covering up one sound with another, often used in acoustics to improve privacy. | | | | 37 | What is amplitude in sound waves? | Amplitude is the maximum displacement of particles from their rest position in a sound wave, related to the loudness of the sound. | | | | 38 | What is the threshold of hearing? | The threshold of hearing is the minimum sound level that can be heard by the average human ear, typically around 0 dB. | | | | 39 | What is decibel (dB)? | Decibel (dB) is a logarithmic unit used to measure the intensity of sound, where 0 dB is the threshold of hearing. | | | | 40 | What is the role of the tympanic membrane? | The tympanic membrane (eardrum) vibrates in response to sound waves, transmitting sound to the ossicles. | | | | 41 | What is an echo? | An echo is a reflection of sound that arrives at the listener after a delay. | | | | 42 | What is a sound spectrum? | A sound spectrum is a representation of the different frequencies present in a sound, often displayed as a graph. | | | | 43 | What is the difference between a pure tone and complex sound? | A pure tone consists of a single frequency, while complex sound is made up of multiple frequencies. | | | | 44 | What is the critical band in hearing? | The critical band is a range of frequencies around a target frequency where the perception of sound is affected by other sounds. | | | | 45 | What is sound localization? | Sound localization is the ability to determine the origin of a sound in space, relying on differences in sound intensity and timing. | | | | 46 | What is the range of human hearing? | The typical range of human hearing is from 20 Hz to 20,000 Hz (20 kHz). | | | | 47 | What is the cochlea? | The cochlea is a spiral-shaped organ in the inner ear that converts mechanical vibrations into neural signals. | | | | 48 | What is the role of the auditory cortex? | The auditory cortex processes auditory information and is responsible for the perception of sound. | | | --- Study this deck interactively with FSRS-6 spaced repetition, audio review, and multiple-choice mode at [Flashcards World](https://flashcards.world/flashcards/sets/9b26d023-9df5-4ac2-9e3b-061ad9bd13c6/).